Wringer



July 12, 1938. w. L. KAUFFMAN,2D 2,123,851

r f v yWRINGER l Filed July 19, 1934 A 'ml/ENTOR.

/J7my y Patented July l2, 1938 UNITEDl STATES wiuNoEa Walter L. Kauman, II, Erie, Pa., assignor to Lovell Manufacturing Company, Erle, Pa., a corporation of Pennsylvania Application .lluly 19, 1934, Serial No. 736,008

5 Claims.

l `present invention is designed to simplify and render more positive' the mechanism for breaking the connection of the driving mechanism for safety purposes and preferably upon the operation of a safety release. Features and details of l the invention will appear from the specification and claims.

A preferred embodiment of the invention is illustrated in the accompanying drawing as follows:-

2@ Fig. 1 shows a central section through'a wringer with the inventionvin place therein.

Fig. 2 an enlarged section of the driving connection.

Fig. 3 an end view of the driving connection fitting.

Fig. 4 an end view of the connecting sleeve. Fig. 5 a section on the line 5--5 in Fig. 1. Fig. 6 a section on the linc 6 6 in Fig. 1. i marks the base of the wringer, 2 one stile,

' 30 the stile at the power side of the wringer, t the top, 5 the lower roll, 6 the upper roll, 'l a lower bearing for the lower roll at the end away from the driving mechanism, and B an upper sliding bearing for the upper roll, the lower roll being 35 provided with the usual shaft 5a. A drive shaft 9 forms a driving means having thek usual gear box I0. It is provided with a cross pin i l which engages a slot l2 in the end of a connecting cam and connecting sleeve I3. The connecting sleeve 40 has slots il, each slot having cam sides adapted to engage a cross pin l5 in a shank i6 of a fitting H. The tting I'l has a slot i8 in its inner end adapted to engage a cross pin I9 on the shaft 5a. The fitting Il has a socket 20 which re.-

45 ceives the end vof the shaft 5a.'. The fitting il erates in an opening 28 in a releasing tting 28a` 55 which is attached to the top B. The release fit ting has radial slots 29 and the release sleeve 2i has shoulders 30 which are adapted to pass through the slots 29. The shoulders operate on a cam surface 3l at the bottom of the fitting 28 resting on a slight flat in the neutral position so 5 thatwhen the shoulders are turned slightly they swing by reason of the cams to the slots 29 and permit the sleeve 2l to move outwardly, releasing pressure on the spring. 'A handle 32 is mounted on the sleeve 2l and facilitates the releasing 10 movement.

` A latch 33 is arranged at the power end of the wringer and pivotally mounted in the top by means of a pin 34. It has a cross bar 33a. and

a latch shoulder engaging a notch 36 in the '15 side stile. The oppositeend of the wringer has a somewhat similar latch 31 which is pivotally mounted on a pin 38. A tail on the latch engages the top bar and limits its swinging movement. Upon the release of the release device the upthrow of the spring rst releases pressure and the overrun of the spring operating on the cross bar 33a operates the latch and releases the power end of the wringer. The upswinging of the top also releases the latch 31 so that the pressure is entirely removed from the upper roll and the pressure thrust communicated from it to the lower roll is also relieved.

When pressure is placed on the lower roll, this pressure is communicated by the shaft 5a and 30 tting il to the bearing surfaces on the block 23 and this creates sufficient friction to interpose a. retarding torque thrust on the connection to effect a camming action between the pin I5 and the sides of the slots I4, in response to such torque 35 thrust resistance, to overcome the spring 2i and move the fitting I1 to the left, as shown in Eig. 2 into locking position with the sides ofthe slots i 8 engaging the pin i9, as shown in Fig. 1. The wringer is then driven under all normal conditions, the added pressure on the rolls only serving to more surely malntainthe driving relation. When the pressure is released on the rolls the spring 2| moves the tting to the right. This is assisted slightly by a slightcamming action of the sides of the slot I8 -and the spring is sumclent with the slight friction between-the tting and the block 23 to hold the iitting inrits released, or rear position, so that the drlvingof the roll immediately ceases. I l

What I claim as 'new is:-

1. In a wringer, the combination of a frame;

rolls mounted in the frame; releasable pressure means exerting pressure on the rolls; driving means; and a driving connection between the 55 driving means and a, roll comprising devices responsive to torque resistance through the connection under normal roll pressure setting the driving connection for driving action and releasing the connection fromdriving action upon a release of such pressure.

2. In a wringer, the combination of a frame; rolls mounted in the frame; releasable pressure means exerting pressure on the rolls; driving means; and a driving connection having cam surfaces subjected to the torque thrust of the connection tending to set the connection in driving engagement under torque thrust through the connection and resilient means tending to break the engagementthe cams and resilient means being related to set the connection under normal roll pressure and break the connection on a release of roll pressure.

3. In a wringer, the combination of a frame; rolls mounted in the frame; a releasable pressure device for the rolls; a shaft for the lower roll; a tting slidingly mounted on the shaft and having clutch surfaces moved into and out of engagement by axial movement of the fitting; a bearing in which the tting is journaled; and driving means; and a driving connection between the driving means and the fitting comprising cam surfaces subjected to the torque thrust of the connection adapted to set the fitting in engagement under torque resistance through the connection incident to pressure on the roll shaft.

4. A roll wringer 4mechanism including a frame, a. pair of rolls therein adapted to be pressed together; bearings for said rolls; a clutch mechanism having a driven element; devices cooperative between the driven element and a roll capable of establishing driving connection betweensaid element and roll; and devices connecting said first-named devices with o ne of said bearings operable responsively to frictional resistance i-n the bearing to operate the clutch mechanism to cause rotation of said roll.

5. A roll wringer mechanism including a frame, a pair of rolls therein; means for pressing the rolls together whereby friction is set up tending to retard rotation of elements of the wringer; mechanism including a driven rotating element and a clutch mechanism capable of establishing driving connection between the driven element and the roll; and a follower element rotatable-in unison with the driven element but vadapted to have its rotation retarded respon- 

